"We were looking for a reaction after Saturday's disappointment (a 3-2 home defeat by Wycombe). The atmosphere in the changing room was good and I thought we started the game in quite a bright manner but it was a very poor performance," said Trollope.
"There was very little credit for anybody concerned. The only people who came out with any credit were the supporters who made a long journey here and supported the team right through to the end.
"We thank them for that but also feel ashamed about the way we performed. Unfortunately with or without the ball we were second best. There was some alarming defending which we need to address very quickly.
"There are some mentality issues within the group which we need to address. If people have not got the mentality to produce on a regular basis they will quickly find themselves out of the team and out of the football club."